Global Patent Index - EP 3951721 A4

EP 3951721 A4 20220720 - METHOD AND APPARATUS FOR DETERMINING OCCLUDED AREA OF VIRTUAL OBJECT, AND TERMINAL DEVICE

Title (en)

METHOD AND APPARATUS FOR DETERMINING OCCLUDED AREA OF VIRTUAL OBJECT, AND TERMINAL DEVICE

Title (de)

VERFAHREN UND VORRICHTUNG ZUR BESTIMMUNG DES VERDECKTEN BEREICHS EINES VIRTUELLEN OBJEKTS UND ENDVORRICHTUNG

Title (fr)

PROCÉDÉ ET APPAREIL PERMETTANT DE DÉTERMINER UNE ZONE MASQUÉE D'UN OBJET VIRTUEL, ET DISPOSITIF TERMINAL

Publication

EP 3951721 A4 20220720 (EN)

Application

EP 20787305 A 20200313

Priority

  • CN 201910295945 A 20190412
  • CN 2020079282 W 20200313

Abstract (en)

[origin: EP3951721A1] A method and apparatus for determining an occluded area of a virtual object, and a terminal device, applicable to the technical field of software. The method comprises: constructing a three-dimensional scene map of a current frame according to feature points of the current frame and corresponding depth information (S11); if a click operation of a user on the three-dimensional scene map is detected, displaying a specified virtual object on a position corresponding to the click operation (S12); constructing a three-dimensional scene model according to feature point information of the current frame (S13); comparing depth values of the three-dimensional scene model and a model of the virtual object (S14); determining an occluded area of the virtual object in the current frame according to the comparison result (S15); and determining an occluded area of the virtual object in the next frame according to the occluded area of the virtual object in the current frame (S16). The method can greatly improve the arithmetic speed of identifying the occluded area of the virtual object in the sequence frame.

IPC 8 full level

G06T 17/00 (2006.01); G06F 3/04815 (2022.01); G06T 19/00 (2011.01)

CPC (source: CN EP US)

G06F 3/04815 (2013.01 - EP US); G06T 7/50 (2017.01 - CN); G06T 7/75 (2017.01 - US); G06T 17/00 (2013.01 - CN EP US); G06T 19/006 (2013.01 - EP); Y02D 10/00 (2018.01 - EP)

Citation (search report)

  • [A] YUAN TIAN ET AL: "Handling Occlusions in Augmented Reality Based on 3D Reconstruction Method", NEUROCOMPUTING, vol. 156, 9 January 2015 (2015-01-09), pages 96 - 104, XP055741293, Retrieved from the Internet <URL:https://www.sciencedirect.com/science/article/pii/S0925231215000065/pdfft?md5=57ae80122715c9a73bc146bd0d2c362f&pid=1-s2.0-S0925231215000065-main.pdf> [retrieved on 20201019], DOI: 10.1016/j.neucom.2014.12.081
  • [A] YUAN TIAN ET AL: "Real-Time Occlusion Handling in Augmented Reality Based on Object Tracking Approach", vol. 10, no. 4, 29 March 2010 (2010-03-29), pages 2885 - 2900, XP002685272, ISSN: 1424-8220, Retrieved from the Internet <URL:www.mdpi.com/journal/sensors> [retrieved on 20220530], DOI: 10.3390/S100402885
  • [A] LEPETIT V ET AL: "Handling occlusion in augmented reality systems: a semi-automatic method", AUGMENTED REALITY, 2000. (ISAR 2000). PROCEEDINGS. IEEE AND ACM INTERN ATIONAL SYMPOSIUM ON MUNICH, GERMANY 5-6 OCT. 2000, PISCATAWAY, NJ, USA,IEEE, US, 5 October 2000 (2000-10-05), pages 137 - 146, XP010520323, ISBN: 978-0-7695-0846-7, DOI: 10.1109/ISAR.2000.880937
  • See also references of WO 2020207191A1

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

EP 3951721 A1 20220209; EP 3951721 A4 20220720; CN 111815755 A 20201023; CN 111815755 B 20230630; US 11842438 B2 20231212; US 2022036648 A1 20220203; WO 2020207191 A1 20201015

DOCDB simple family (application)

EP 20787305 A 20200313; CN 201910295945 A 20190412; CN 2020079282 W 20200313; US 202117499856 A 20211012